Anti-carbonyl reductase 1 antibodies are used for the immunodetection of the protein encoded by the CBR1 gene. In humans, the canonical protein has a reported length of 277 amino acid residues and a mass of 30.4 kDa. Its subcellular localization is in the cytoplasm. Alternative splicing is reported to yield 2 different isoforms for this protein. It is notably expressed in the kidney. A member of the Short-chain dehydrogenases/reductases (SDR) protein family, it is known to be involved with epithelial cell differentiation. Other names for this target antigen include PG-9-KR, SDR21C1, hCBR1, carbonyl reductase [NADPH] 1, 20-beta-hydroxysteroid dehydrogenase, and CBR. Gene orthologs have been identified in the mouse, rat, zebrafish, chimpanzee and chicken species. A number of carbonyl reductase 1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA, Immunocytochemistry, Immunofluorescence, and Immunohistochemistry are also common applications.